All the offspring of a cross between a tall pea plant and a dwarf pea plant are tall. This means that the allele for tall plants is <u>DOMINANT OVER</u> the allele for dwarf plants.
Explanation:
Mendel's law of dominance state that the heterozygous genotype expresses only one allele of a gene out of the two alleles present together. The allele that is expressed in a heterozygous genotype is said to be the dominant one as it does not allow the expression of another allele of the gene.
The allele of a gene that is not expressed in the presence of its dominant allele is said to be the recessive one. Under such conditions, a heterozygous genotype expresses the dominant phenotype. When a tall and dwarf pea plants are crossed, all the F1 progeny is tall. This means that the allele for the tallness is dominant over the allele for the dwarfism.
Pneumocystosis is an infection of the lungs. Its causative organism is the microorganism Pneumocystis carinii. Pneumocystosis is nearly entirely and completely observed in individuals that have a immune systems that have been weakened and diminished by AIDS or chemotherapy. Pneumocystosis is majorly a terminal occurrence in AIDS patients.
